CN204203393U - Electric wire breaking point detection circuit - Google Patents
Electric wire breaking point detection circuit Download PDFInfo
- Publication number
- CN204203393U CN204203393U CN201420412097.2U CN201420412097U CN204203393U CN 204203393 U CN204203393 U CN 204203393U CN 201420412097 U CN201420412097 U CN 201420412097U CN 204203393 U CN204203393 U CN 204203393U
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- resistance
- electric capacity
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Abstract
The utility model discloses a kind of electric wire breaking point detection circuit, comprise audio frequency oscillator (1), Signal reception treatment circuit (2), Hi-pass filter (3), output amplifier (4); Described audio frequency oscillator (1) provides a test signal for detecting electric wire breakpoint; Described Signal reception treatment circuit (2) receives test signal, and provides the input impedance of 10 megaohms for test signal, to improve detection sensitivity, and by emitter follower, test signal is amplified; Described Hi-pass filter (3) provides a cutoff frequency to be the passage of 1KHz, and make the test signal exported through Signal reception treatment circuit, can not decayed by Hi-pass filter smoothly, the power frequency interference signals of 50Hz is then attenuated; Described output amplifier (4) is the test signal receiving Hi-pass filter, and amplifies test signal, and test signal is coupled to hummer, drives hummer sounding.Utilize the utility model, electric wire breakpoint location can be judged when electric wire not power-off, easy to use, be suitable for a kind of instrument of ordinary people to electric wire breaking point detection.
Description
Technical field
The utility model relates to testing circuit, refers more particularly to a kind of pick-up unit judging electric wire breakpoint.
Background technology
The power lead that people run into equipment has in daily life broken, the line of net connection interface has broken, the order wire of signal has broken, earphone cord to have broken etc. common problem, if can solve the breaking point detection problem of electric wire technically, allows ordinary people also can detect breakpoint, that can bring great convenience, therefore, in order to the breakpoint allowing more ordinary people can detect electric wire, need develop one simply, electric wire breaking point detection device efficiently.
Summary of the invention
The utility model is intended to solve the deficiencies in the prior art, provides a kind of electric wire breaking point detection circuit.
Described electric wire breaking point detection circuit, comprises audio frequency oscillator, Signal reception treatment circuit, Hi-pass filter, output amplifier;
Described audio frequency oscillator provides a test signal for detecting electric wire breakpoint;
Described Signal reception treatment circuit receives test signal, and provides the input impedance of 10 megaohms for test signal, to improve detection sensitivity, and by emitter follower, test signal is amplified;
Described Hi-pass filter provides a cutoff frequency to be the passage of 1KHz, and make the test signal exported through Signal reception treatment circuit, can not decayed by Hi-pass filter smoothly, the power frequency interference signals of 50Hz is then attenuated;
Described output amplifier is the test signal receiving Hi-pass filter, and amplifies test signal, and test signal is coupled to hummer, drives hummer sounding;
Described audio frequency oscillator comprises direct supply, switch, the first resistance, the second resistance, the 3rd resistance, the first electric capacity, the first integrated circuit (LM324), the 4th resistance, audio signal output end (OUT), probe;
One end of the positive termination switch of described direct supply, negativing ending grounding;
One termination switch of described first resistance, one end of 2 pin of another termination first integrated circuit, one end of the second resistance and the 3rd resistance;
3 pin of described first integrated circuit connect one end of the first electric capacity and one end of the 4th resistance, 4 pin connect direct supply, 11 pin ground connection, and 1 pin connects the other end of the 3rd resistance, the other end of the 4th resistance and audio signal output end, the other end of another termination first electric capacity of the second resistance, and ground connection;
Described Signal reception treatment circuit comprises test signal receiving end (IN), the 5th resistance, the 6th resistance, the 7th resistance, the second electric capacity, emitter follower, audio frequency shielding line;
One termination test signal receiving end (IN) of described audio frequency shielding line, the screen layer that the other end peels off 10mm receives the sensing point of tested wire, one end of one termination the 5th resistance of the 7th resistance, one end of the 6th resistance and one end of the second electric capacity, 3 pin of another termination emitter follower and test signal receiving end (IN), another termination switch of 5th resistance, 7 pin of emitter follower, the other end of the 6th resistance also connects the other end of the second electric capacity, and ground connection, 2 pin of emitter follower connect one end of 6 pin and the 3rd electric capacity, 4 pin ground connection;
Described Hi-pass filter comprises the 3rd electric capacity, the 8th resistance, the 4th electric capacity, the 9th resistance, the 5th electric capacity, the tenth resistance, the 6th electric capacity, the 11 resistance, the second integrated circuit (of TL082CN double operational);
The other end of one termination the 3rd electric capacity of described 8th resistance and one end of the 4th electric capacity, one end of 1 pin of another termination second integrated circuit, 2 pin, 5 pin and the tenth resistance, the other end of one termination the 4th electric capacity of the 9th resistance and one end of the 5th electric capacity, one end of another termination the 11 resistance, and ground connection, the other end of one termination the tenth resistance of the 6th electric capacity and the other end of the 5th electric capacity, 3 pin of the second integrated circuit connect the other end of the 6th electric capacity and the other end of the 11 resistance, 8 pin connect the other end of switch, 4 pin ground connection;
Described output amplifier comprises the second integrated circuit (TL082CN double operational another), the 12 resistance, the 13 resistance, the 7th electric capacity, the 8th electric capacity, hummer;
6 pin of described second integrated circuit connect one end of the 13 resistance and one end of the 12 resistance, 7 pin connect the other end of the 12 resistance and one end of the 8th electric capacity, the anode of another termination hummer of the 8th electric capacity, the other end of one termination the 13 resistance of the 7th electric capacity, the negative terminal of another termination hummer, and ground connection;
As electric wire breaking point detection circuit of the present utility model, the test signal of a 1.1KHz is produced by audio frequency oscillator, Signal reception treatment circuit is utilized to strengthen the sensitivity of detection, by Hi-pass filter filtering interference signals, make test signal effectively can arrive hummer by output amplifier, and sounding.Adopt the utility model, electric wire breakpoint location can be judged when electric wire not power-off, have that input impedance is high, precision is high, volume is little, simply, feature efficiently, be applicable to ordinary people to a kind of detecting instrument of electric wire breakpoint.
Accompanying drawing explanation
Fig. 1 is the structural representation of electric wire breaking point detection circuit of the present utility model.
Fig. 2 is the circuit diagram of the electric wire breaking point detection circuit of the utility model Fig. 1.
Fig. 3 is the circuit diagram of the electric wire breaking point detection circuit utilizing the utility model to develop.
Embodiment
Below in conjunction with accompanying drawing, the utility model content is further illustrated.
As shown in Figure 1, be the structural drawing of the utility model electric wire breaking point detection circuit, comprise audio frequency oscillator 1, Signal reception treatment circuit 2, Hi-pass filter 3, output amplifier 4;
Described audio frequency oscillator 1 provides a frequency to be the test signal of 1.1KHz for detecting electric wire breakpoint;
Described Signal reception treatment circuit 2 receives test signal, and provide the input impedance of 10 megaohms for test signal, to improve detection sensitivity, and by emitter follower, test signal amplified;
Described Hi-pass filter 3 provides a cutoff frequency to be the passage of 1KHz, the test signal of therefore Signal reception treatment circuit output, and through level Four Hi-pass filter, its test signal does not produce decay, and the power frequency interference signals of 50Hz is then attenuated;
Described output amplifier 4 is the test signals receiving Hi-pass filter, and amplifies test signal, and test signal is coupled to hummer, drives hummer sounding;
As shown in Figure 2, be the circuit diagram of the electric wire breaking point detection circuit of the utility model Fig. 1.
Described audio frequency oscillator comprises direct supply 11, switch 12, resistance 13, resistance 14, resistance 15, electric capacity 16, integrated circuit (LM324) 17, resistance 18, audio signal output end (OUT) 19, probe 10;
One end of the positive termination switch 12 of described direct supply 11, negativing ending grounding;
One termination switch 12 of described resistance 13, one end of 2 pin of another termination integrated circuit 17, one end of resistance 14 and resistance 15;
3 pin of described integrated circuit 17 connect one end of electric capacity 16 and one end of resistance 18,4 pin connect direct supply 11,11 pin ground connection, the other end of 1 pin connecting resistance 15, the other end of resistance 18 and audio signal output end 19, the other end of another termination capacitor 16 of resistance 14, and ground connection;
Described Signal reception treatment circuit comprises test signal receiving end (IN) 21, resistance 22, resistance 23, resistance 24, electric capacity 25, emitter follower 26, audio frequency shielding line 20;
One termination test signal receiving end (IN) 21 of described audio frequency shielding line 20, the screen layer that the other end peels off 10mm receives the sensing point of tested wire, one end of one end of a terminating resistor 22 of resistance 24, one end of resistance 23 and electric capacity 25,3 pin of another termination emitter follower 26 and test signal receiving end (IN) 21, another termination switch 12 of resistance 22,7 pin of emitter follower 26, the other end of the other end shunt-wound capacitance 25 of resistance 23, and ground connection, 2 pin of emitter follower connect one end of 6 pin and electric capacity 31,4 pin ground connection;
Described Hi-pass filter comprises electric capacity 31, resistance 32, electric capacity 33, resistance 34, electric capacity 35, resistance 36, electric capacity 37, resistance 38, integrated circuit (of TL082CN double operational) 39;
The other end of one termination capacitor 31 of described resistance 32 and one end of electric capacity 33, one end of 1 pin of another termination integrated circuit 39,2 pin, 5 pin and resistance 36, the other end of one termination capacitor 33 of resistance 34 and one end of electric capacity 35, one end of other end connecting resistance 38, and ground connection, the other end of a terminating resistor 36 of electric capacity 37 and the other end of electric capacity 35,3 pin of integrated circuit 39 connect the other end of electric capacity 37 and the other end of resistance 38,8 pin connect the other end of switch 12,4 pin ground connection;
Described output amplifier comprises integrated circuit (TL082CN double operational another) 40, resistance 41, resistance 42, electric capacity 43, electric capacity 44, hummer 45;
One end of 6 pin connecting resistances 42 of described integrated circuit 40 and one end of resistance 41, the other end of 7 pin connecting resistances 41 and one end of electric capacity 44, the anode of another termination hummer 45 of electric capacity 44, the other end of a terminating resistor 42 of electric capacity 43, the negative terminal of another termination hummer 45, and ground connection;
The method of electric wire breaking point detection, comprises the steps:
The probe of the output terminal of audio frequency oscillator (OUT) is received detected electric wire one end, sound signal is made to pass through wire transfer, the audio frequency shielding line be connected on Signal reception treatment circuit IN end is utilized to receive the other end of detected electric wire, the signal that audio frequency shielding line detects is coupled to hummer after Signal reception treatment circuit, Hi-pass filter, output amplifier, if detected electric wire is without breakpoint, then hummer generation sound, there is breakpoint, then hummer tone-off in the electric wire as detected.
As shown in Figure 3, be the circuit diagram of the electric wire breaking point detection circuit that utilizes the utility model to develop.
The utility model discloses a kind of electric wire breaking point detection circuit, and describe embodiment of the present utility model and effect with reference to the accompanying drawings.It is understood that above-described embodiment is just to explanation of the present utility model, instead of to restriction of the present utility model, any utility model do not exceeded in the utility model spirit is created, and all falls within the utility model protection domain.
Claims (4)
1. electric wire breaking point detection circuit, is characterized in that comprising audio frequency oscillator, Signal reception treatment circuit, height
Bandpass filter, output amplifier:
Described audio frequency oscillator provides a test signal for detecting electric wire breakpoint, comprises direct supply, switch, the first resistance, the second resistance, the 3rd resistance, the first electric capacity, the first integrated circuit, the 4th resistance, audio signal output end, probe;
One end of the positive termination switch of described direct supply, negativing ending grounding; One termination switch of the first resistance, one end of 2 pin of another termination first integrated circuit, one end of the second resistance and the 3rd resistance; 3 pin of the first integrated circuit connect one end of the first electric capacity and one end of the 4th resistance, 4 pin connect direct supply, 11 pin ground connection, and 1 pin connects the other end of the 3rd resistance, the other end of the 4th resistance and audio signal output end, the other end of another termination first electric capacity of the second resistance, and ground connection;
Described Signal reception treatment circuit receives test signal, and provides the input impedance of 10 megaohms for test signal, to improve detection sensitivity, and by emitter follower, test signal is amplified;
Described Hi-pass filter provides a cutoff frequency to be the passage of 1KHz, and make the test signal exported through Signal reception treatment circuit, can not decayed by Hi-pass filter smoothly, the power frequency interference signals of 50Hz is then attenuated;
Described output amplifier is the test signal receiving Hi-pass filter, and amplifies test signal, and test signal is coupled to hummer, drives hummer sounding.
2. electric wire breaking point detection circuit as claimed in claim 1, is characterized in that described Signal reception treatment circuit comprises test signal receiving end, the 5th resistance, the 6th resistance, the 7th resistance, the second electric capacity, emitter follower, tone frequency channel wire;
One termination test signal receiving end of described tone frequency channel wire, the screen layer that the other end peels off 10mm receives the sensing point of tested wire, one end of one termination the 5th resistance of the 7th resistance, one end of the 6th resistance and one end of the second electric capacity, 3 pin of another termination emitter follower and test signal receiving end, another termination switch of 5th resistance, 7 pin of emitter follower, the other end of the 6th resistance also connects the other end of the second electric capacity, and ground connection, 2 pin of emitter follower connect one end of 6 pin and the 3rd electric capacity, 4 pin ground connection.
3. electric wire breaking point detection circuit as claimed in claim 1, is characterized in that described Hi-pass filter comprises the 3rd electric capacity, the 8th resistance, the 4th electric capacity, the 9th resistance, the 5th electric capacity, the tenth resistance, the 6th electric capacity, the 11 resistance, the second integrated circuit;
The other end of one termination the 3rd electric capacity of described 8th resistance and one end of the 4th electric capacity, one end of 1 pin of another termination second integrated circuit, 2 pin, 5 pin and the tenth resistance, the other end of one termination the 4th electric capacity of the 9th resistance and one end of the 5th electric capacity, one end of another termination the 11 resistance, and ground connection, the other end of one termination the tenth resistance of the 6th electric capacity and the other end of the 5th electric capacity, 3 pin of the second integrated circuit connect the other end of the 6th electric capacity and the other end of the 11 resistance, 8 pin connect the other end of switch, 4 pin ground connection.
4. electric wire breaking point detection circuit as claimed in claim 1, is characterized in that described output amplifier comprises the second integrated circuit, the 12 resistance, the 13 resistance, the 7th electric capacity, the 8th electric capacity, hummer;
6 pin of described second integrated circuit connect one end of the 13 resistance and one end of the 12 resistance, 7 pin connect the other end of the 12 resistance and one end of the 8th electric capacity, the anode of another termination hummer of the 8th electric capacity, the other end of one termination the 13 resistance of the 7th electric capacity, the negative terminal of another termination hummer, and ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420412097.2U CN204203393U (en) | 2014-07-22 | 2014-07-22 | Electric wire breaking point detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420412097.2U CN204203393U (en) | 2014-07-22 | 2014-07-22 | Electric wire breaking point detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204203393U true CN204203393U (en) | 2015-03-11 |
Family
ID=52661338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420412097.2U Expired - Fee Related CN204203393U (en) | 2014-07-22 | 2014-07-22 | Electric wire breaking point detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204203393U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342869A (en) * | 2018-11-08 | 2019-02-15 | 天津大学 | A kind of household electrical line setting locator |
| CN109557407A (en) * | 2018-12-21 | 2019-04-02 | 湖南金泰检测检验有限公司 | Earth conductor cable breakpoint of cable position detecting circuit and method |
-
2014
- 2014-07-22 CN CN201420412097.2U patent/CN204203393U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342869A (en) * | 2018-11-08 | 2019-02-15 | 天津大学 | A kind of household electrical line setting locator |
| CN109557407A (en) * | 2018-12-21 | 2019-04-02 | 湖南金泰检测检验有限公司 | Earth conductor cable breakpoint of cable position detecting circuit and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20150722 |
|
| EXPY | Termination of patent right or utility model |